142475649 has 4 divisors (see below), whose sum is σ = 189967536. Its totient is φ = 94983764.

The previous prime is 142475621. The next prime is 142475651. The reversal of 142475649 is 946574241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142475649 - 2¹¹ = 142473601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142475649.

It is not an unprimeable number, because it can be changed into a prime (142475609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23745939 + ... + 23745944.

It is an arithmetic number, because the mean of its divisors is an integer number (47491884).

Almost surely, 2^142475649 is an apocalyptic number.

It is an amenable number.

142475649 is a deficient number, since it is larger than the sum of its proper divisors (47491887).

142475649 is an equidigital number, since it uses as much as digits as its factorization.

142475649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47491886.

The product of its digits is 241920, while the sum is 42.

The square root of 142475649 is about 11936.3163915841. The cubic root of 142475649 is about 522.2922095242.

The spelling of 142475649 in words is "one hundred forty-two million, four hundred seventy-five thousand, six hundred forty-nine".